Pro-Shot's Copper Solvent IV is a Superior Next Generation Formula that is made specifically for Copper and Powder fouling. It cleans while providing superior rust protection. This superior formula is used by competitive shooters, federal law enforcement, and accuracy minded shooters across the globe. With many rifle & pistol shooting championships to its credit, find out why Pro-Shots Copper Solvent IV is a superior cleaner for a bore. Copper Solvent IV is a highly effective way to clean a barrel without the harsh and toxic chemicals used in traditional bore cleaners. Pro-Shot's proprietary formula also includes and oil for short term barrel rust and corrosion protection. FeaturesSynthetic Cleaner (Non-Ammonia) Next Generation FormulaLight Scent- Non-Offensive OdorUses Positive Charged Ions with Activated AdditivesRust & Corrosion ProtectionEnvironmentally Safe Formula - No Harsh or Toxic Chemical